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Six New Species and Additional Records of Aleocharinae from China ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Linzer biologische Beiträge Jahr/Year: 2011 Band/Volume: 0043_1 Autor(en)/Author(s): Assing Volker Artikel/Article: Six new species and additional records of Aleocharinae from China (Coleoptera: Staphylinidae: Aleocharinae) 291-310 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Linzer biol. Beitr. 43/1 291-310 25.7.2011 Six new species and additional records of Aleocharinae from China (Coleoptera: Staphylinidae: Aleocharinae) V. ASSING A b s t r a c t : Six species from China are described and illustrated: Silusa excisa nov.sp. (Sichuan), S. mandibulata nov.sp. (Yunnan), Tropimenelytron sinuosum nov.sp. (Yunnan), Bellatheta diacangica nov.sp. (Yunnan), Platyola geostiboides nov.sp. (Yunnan), and Anomognathus serratus nov.sp. (Zhejiang). Additional records of eight species of Aleocharinae from Yunnan and Zhejiang are reported. Atheta excaecata ASSING 2009 is moved to the genus Oroekklina PACE 1999. Lectotypes are designated for Leptusa bodemeyeri EPPELSHEIM 1883 and Thectura armata SHARP 1888. Improved illustrations of Silusa sichuanensis PACE 2004 and Tropimenelytron viaticum (PACE 1998) are provided; the previously unknown male sexual characters of Oroekklina excaecata, Silusa bodemeyeri (EPPELSHEIM 1883), and the sexual characters of Anomognathus armatus (SHARP 1888) are figured. Previous records of Silusa bodemeyeri from China are based on misidentifications. K e y w o r d s : Coleoptera, Staphylinidae, Aleocharinae, Silusini, Athetini, Oxypodini, Palaearctic region, China, Yunnan, Sichuan, Zhejiang, taxonomy, new species, new combination, lectotype designation, new records. Introduction Until recently, the staphylinid fauna of China had received relatively little attention. This is particularly true of the Aleocharinae, the most speciose of all staphylinid subfamilies. However, owing to increased collecting activity, numerous species have been described in the past two decades (e.g., ASSING 2006, 2009; PACE 1993, 1998a-c, 2004a-b). The present paper is primarily based on material collected in Yunnan in 2009 by Michael Schülke (Berlin) and David Wrase (Berlin); additional material came from Andreas Pütz (Eisenhüttenstadt), Johannes Huschke (Herford), and Aleš Smetana (Ottawa). Material and methods The material referred to in this study is deposited in the following public and private collections: MHNG .............Muséum d'Histoire naturelle, Genève (G. Cuccodoro) NHMW ............Naturhistorisches Museum Wien (H. Schillhammer) © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at 292 cAss..................author´s private collection cPüt ..................private collection A. Pütz, Eisenhüttenstadt cSch..................private collection M. Schülke, Berlin cSme.................private collection A. Smetana, Ottawa The morphological studies were conducted using a Stemi SV 11 microscope (Zeiss Ger- many) and a Jenalab compound microscope (Carl Zeiss Jena) with a drawing tube. For the photographs a digital camera (Nikon Coolpix 995) was used. Head length was measured from the anterior margin of the clypeus to the posterior mar- gin of the head, elytral length at the suture from the apex of the scutellum to the posterior margin of the elytra, and aedeagus length from the base of the capsule to the apex of the ventral process. The parameral side of the median lobe of the aedeagus is referred to as the ventral, the opposite side as the dorsal aspect. New species and additional records Silusa smetanai PACE 1998 Type material examined: Holotype &: "China, Sichuan, Gongga Shan, above Camp 3, 3050 m, 22.VII.1994, A. Smetana [C18] / Holotypus Silusa smetanai m., det. R. Pace 1996 / Silusa smetanai sp. n. det. R. Pace 1996" (MHNG). C o m m e n t : The original description is based on a single female from "China, Sichuan, Gongga Shan, above camp 3, 3050 m" (PACE 1998a). Since Silusa species are reliably identified only based on the male sexual characters, the identity of S. smetanai remains doubtful. PACE (2004a) reported a male from Sichuan without illustrations of the sexual characters and without specifying the depository. This specimen was found nei- ther in the Smetana collection nor at the MHNG. The holotype is of darker coloration and somewhat larger than the specimens of the following species. Silusa leptusoides PACE 2004 M a t e r i a l e x a m i n e d : China: 7 exs., Yunnan, Nujiang Lisu Pref., Gaoligong Shan, 21 km NW Liuku, "Cloud pass", 25°58'N, 98°41'E, 3150 m, shrubs, Vaccinium, bamboo, litter sifted, 2.IX.2009, leg. Wrase (cSch, cAss). C o m m e n t : The original description is based on a holotype and five paratypes from two localities in Sichuan (PACE 2004a). The above specimens represent the first record from Yunnan. Silusa sichuanensis PACE 2004 (Figs 1-6) Type material examined: Holotype (: "China: W Sichuan, 20 km N Sabdê, 3200 m, 29°35N 102°23'E, 15.VII.1998, A. Smetana [C83 / 1998 China Expedition, J. Farka\, D. Král, J. Schneider & A. Smetana / Holotypus Silusa sichuanensis m. det. R. Pace 1999 / Silusa sichuanensis sp. n. det. R. Pace 1999" (MHNG). Additional material examined:China: 1(, 1&, N-Yunnan, Zhongdian Co., 48 km N Zhongdian, 28°16.6'N, 9°45.7'E, 3220 m, creek valley, devastated primary forest, dead wood, moss, mushrooms, 21.VIII.2003, leg. M. Schülke (cSch, cAss). C o m m e n t : According to the original description, which is based on a male holo- © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at 293 type and eight paratypes from "West Sichuan, 20 km N Sabdê" (PACE 2004a), the body length is 2.9 mm. An examination of the holotype and the above material from Yunnan, however, revealed that the species is distinctly larger (3.5-4.0 mm). Also, the pronotum has a coarsely punctate transverse impression posteriorly (neither mentioned nor illus- trated in the original description of S. sichuanensis), and the coloration is rather different: head blackish; pronotum brown with narrowly yellowish margins; elytra yellowish, with the region behind scutellum and the postero-lateral angles extensively infuscate (brown); abdomen reddish, with the median portion of tergites III-IV, most of tergites V-VI, and anterior half of tergite VII blackish; legs and maxillary palpi yellowish; antennae brown, with the basal three antennomeres reddish. For illustrations of the material from Yunnan see Figs 1-6. Figs 1-6: Silusa sichuanensis PACE (Yunnan): (1) habitus; (2) forebody; (3) male tergite VIII; (4) male sternite VIII; (5) median lobe of aedeagus in lateral view; (6) spermatheca. Scale bars: 1: 1.0 mm; 2: 0.5 mm; 3-4: 0.2 mm; 5-6: 0.1 mm. © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at 294 Silusa excisa nov.sp. (Figs 7-12) T y p e m a t e r i a l : Holotype (: "China: Sichuan, Qingcheng Shan, 65 km NW Chengdu, 103.33 E, 30.53 N, 18.V./3.-4.VI.1997, 8 km W Taiping, 800-1000 m, leg. A. Pütz / Holotypus ( Silusa excisa sp. n. det. V. Assing 2010" (cPüt). Paratypes: 3&&: same data as holotype (cPüt, cAss); 1&: "China: Sichuan (17), Qingcheng Shan, NW Chengdu, 650-700 m, 30.53.57 N, 103.32.23 E, 3./4.06.1997, M. Schülke / Silusa bodemeyeri (E.), det. R. Pace 1999" (cSch). D e s c r i p t i o n : Body length 3.0-3.5 mm. Habitus as in Fig. 7. Coloration: head blackish-brown to blackish; pronotum and elytra yellowish-red to dark-reddish, with the postero-lateral portion of the elytra extensively infuscate; abdomen with segments III-V or III-VI dark-reddish and the remainder infuscate, except for the yellowish to reddish posterior margins of the segments; legs reddish with the femora somewhat darker; anten- nae reddish-brown, with the basal three antennomeres reddish. Head (Fig. 8) weakly transverse; punctation dense, moderately fine, and defined, some- what sparser in median and in anterior dorsal portion; interstices without distinct microsculpture. Eyes large and convex, longer than postocular portion in dorsal view. Antennae approximately 0.8 mm long; antennomere IV approximately as long as wide; V-X gradually increasing in width; preapical antennomeres approximately twice as wide as long. Pronotum (Fig. 8) approximately 1.5 times as wide as long and 1.4 times as wide as head; maximal width in the middle; lateral margins very weakly sinuate in posterior half, posterior angles almost rectangularly marked; near posterior margin with long transverse impression with numerous coarse punctures; punctation of remainder of dorsal surface fine, much finer than that of head, and dense; pubescence long, fine, and suberect; inter- stices without distinct microsculpture. Elytra (Fig. 8) long and broad, approximately 1.15 times as long as pronotum; posterior margin strongly sinuate near postero-lateral angle; punctation coarse and very dense. Hind wings fully developed. Metatarsomere I approximately as long as II. Abdomen anteriorly with moderately sparse, posteriorly with very sparse punctation; interstices glossy; posterior margin of tergite VII with palisade fringe. (: tergite VII posteriorly with small median tubercle; posterior margin of tergite VIII in the middle excised, on either side of this excision serrulate (Fig. 9); sternite VIII strongly transverse, posterior margin strongly produced in the middle (Fig. 10); median lobe of aedeagus 0.41 mm long, with apical internal structures of distinctive shape (Fig. 11). &: posterior margin of tergite VIII weakly convex; posterior margin of sternite VIII weakly produced in the middle; spermathecal capsule with very long and slender proxi- mal portion (Fig. 12). E t y m o l o g y : The name (Latin, adjective) refers to the characteristic shape of the posterior margin of the male tergite VIII. Comparative notes: Ten species of Silusa are currently known from China (SMETANA 2004, PACE 2004a), the vast majority of which were described or recorded from there by PACE (1998a, 2004a). Silusa excisa is distinguished from them particularly by the male primary and secondary sexual characters, as well as by the shape of the spermatheca.
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